b) 200 x 4 = .800..... 300 x 2 = ..600....
200 x 2 = .400..... 300 x 3 = ...900...
400 x 2 = ...800... 500 x 1 = ..500....
100 x 4 = ..400.... 100 x 3 = .300.....
200 x 4 = 800
200 x 2 = 400
400 x 2 = 800
100 x 4 = 400
300 x 2 = 600
300 x 3 = 900
500 x 1 = 500
100 x 3 = 300
200 x 4 = 800
200 x 2 = 400
400 x 2 = 800
100 x 4 = 400
300 x 2 = 600
300 x 3 = 900
500 x 1 = 500
100 x 3 = 300